NGC 1300. Left panel: Images of the F814W filter of HST (a, b), and Legacy Z band (c, d). Middle and right panels: ALMA data (mean flux and velocity map) associated with each FOV, as described in section 3. The orientation N–E is north up and east right. The cross (arbitrary size) indicates the centre of the image, which was taken from the emission peak from the infrared image and was used to match the ALMA images.